class FacebookRestClient { 
 public function __construct($api_key, $secret, $session_key=null) {
    $this->secret       = $secret;
    $this->session_key  = $session_key;
    $this->api_key      = $api_key;
    $this->batch_mode = FacebookRestClient::BATCH_MODE_DEFAULT;
    $this->last_call_id = 0;
    $this->call_as_apikey = '';
    $this->use_curl_if_available = true;
    $this->server_addr =
      Facebook::get_facebook_url('api') . '/restserver.php';
    $this->photo_server_addr =
      Facebook::get_facebook_url('api-photo') . '/restserver.php';

    if (!empty($GLOBALS['facebook_config']['debug'])) {
      $this->cur_id = 0;
      ?>
<script type="text/javascript">
var types = ['params', 'xml', 'php', 'sxml'];
function getStyle(elem, style) {
  if (elem.getStyle) {
    return elem.getStyle(style);
  } else {
    return elem.style[style];
  }
}
function setStyle(elem, style, value) {
  if (elem.setStyle) {
    elem.setStyle(style, value);
  } else {
    elem.style[style] = value;
  }
}
function toggleDisplay(id, type) {
  for (var i = 0; i < types.length; i++) {
    var t = types[i];
    var pre = document.getElementById(t + id);
    if (pre) {
      if (t != type || getStyle(pre, 'display') == 'block') {
        setStyle(pre, 'display', 'none');
      } else {
        setStyle(pre, 'display', 'block');
      }
    }
  }
  return false;
}
</script>
<?php
    }
  }
...
}